Double Orifice Air Release Valve
Body: GGG40/50 Ductile Iron
Ball: SS304 as Standard (SS316, SS316L,SS420)
Bolts: Carbon Steel, A2, A4
Nuts: Carbon Steel A2, A4
Large Orifice Sealing: NBR
Large Cover: GGG50 Ductile Iron
Small Ball: SS304 as Standard (SS316, SS316L,SS420
Small Orifice Sealing: NBR, EPDM
Air Release Nuts: Brass
- Dual chamber design for efficient air release through two separate orifices
- Large orifice for quick air discharge during filling/draining of pipeline
- Small orifice for continual air release under operating pressure
- Float-operated system requires no external power
- Plastic float minimizes corrosion and maintenance
- Resilient seated design provides tight shutoff when closed
- Compact and lightweight body for easy installation
- Modular design allows for easy maintenance and part replacement
- Suitable for water, wastewater, and sewage applications
- Ductile iron body provides strength and corrosion resistance
- Epoxy coating on internal & external surfaces prevents corrosion
- Can be installed in any orientation in horizontal or vertical pipelines
- Automatic operation releases accumulated air while preventing water loss
- Triple function valve combines venting, air release, and operational air discharge
- High discharge capacity handles large amounts of air
- Withstands high pressures up to 24 bar test pressure
| Specification | Value |
|---|---|
| Minimum operation pressure | 16 bar |
| Testing Pressure (Shell) | 24 bar |
| Testing Pressure (Seal) | 17.6 bar |
| Working Temperature Range | -10°C to 100°C |
| Additional Features | Lifting lug |
| Design | Double chamber air valve in compact design |
| Sealing System/Standard | Resilient seated |
Double Orifice Air Release Valve: The Key to Efficient Air Removal
Double orifice air release valves (DOARVs) are essential components in ensuring the smooth operation of pipelines. They are designed to efficiently remove air pockets that can form in pipelines, preventing a range of problems that can impact performance and reliability.
Why are air pockets problematic in pipelines?
Air pockets can lead to several issues in pipelines, including:
- Reduced flow rates: Air pockets act as obstacles, hindering the smooth flow of liquid, reducing the overall capacity of the pipeline.
- Increased energy consumption: Pumps have to work harder to overcome the resistance caused by air pockets, leading to higher energy consumption.
- System damage: In extreme cases, air pockets can cause cavitation, a phenomenon where rapid pressure changes create bubbles that collapse violently. This cavitation can damage pipeline walls and equipment.
- Inaccurate measurements: Air pockets can interfere with flow meters, leading to inaccurate readings and hindering effective system monitoring.
How do double orifice air release valves work?
DOARVs are designed to address these issues by automatically eliminating air pockets before they can cause problems. The valve consists of a body, a float mechanism, and two sealing orifices.
The working principle:
- Air Accumulation: As air gathers in the pipeline and reaches the valve, it enters the valve chamber.
- Float Mechanism Activation: The air’s buoyancy causes the float mechanism to rise within the chamber.
- Orifice Opening: As the float rises, it triggers the opening of the first sealing orifice.
- Initial Air Release: A portion of the trapped air escapes through the first orifice.
- Second Orifice Activation: As the air continues to escape, the float rises further, opening the second sealing orifice.
- Complete Air Release: The remaining trapped air is released through the second orifice, ensuring complete air removal.
- Float Reset: Once the air is released, the float mechanism descends due to the weight of the liquid, closing both orifices again.
This unique two-stage orifice design allows DOARVs to remove air more efficiently and effectively compared to traditional single orifice valves.
Advantages of Double Orifice Air Release Valves
DOARVs offer several advantages over traditional single orifice valves:
- Enhanced Air Removal: The two-stage orifice design ensures more efficient and complete air removal, minimizing the risk of air pockets forming in the pipeline.
- Increased Flow Rates: By eliminating air pockets, DOARVs help to improve flow rates, maximizing the pipeline’s capacity.
- Reduced Energy Consumption: Improved flow rates lead to reduced energy consumption by pumps, resulting in operational cost savings.
- Improved System Protection: DOARVs reduce the risk of cavitation and other damage caused by air pockets, protecting the pipeline and equipment.
- Enhanced Measurement Accuracy: Air-free pipelines ensure accurate flow meter readings, enabling effective system monitoring and control.
Applications of Double Orifice Air Release Valves
DOARVs are used in a wide range of pipeline systems, including:
- Water Pipelines: They are crucial in water distribution networks, preventing air pockets that could disrupt water pressure and delivery.
- Oil and Gas Pipelines: Air pockets can cause pipeline ruptures and flow disruptions in oil and gas pipelines. DOARVs play a vital role in maintaining safe and efficient transportation of these resources.
- Irrigation Systems: Air pockets in irrigation systems can lead to uneven watering and reduced efficiency. These valves ensure optimal water delivery to crops.
- Sewage Systems: Air pockets can disrupt the flow of sewage and create blockages. DOARVs maintain the smooth operation of these essential systems.
- Industrial Pipelines: They are used in various industrial processes where maintaining consistent liquid flow is critical.
Double Orifice Air Release Valves – A Key to Efficient Pipelines
Double orifice air release valves are a crucial component in ensuring the efficient and reliable operation of pipelines. By efficiently removing air pockets and preventing their associated problems, DOARVs contribute to the smooth flow of liquids, enhance system performance, and protect pipelines and equipment.
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Jhy engineers have meticulously designed these valves to operate with minimal moving parts, ensuring frictionless movement and near-instantaneous closure. Learn more by visiting our contact page.
Ready to experience the Jhy difference? Visit their website at https://www.jhyvalve.com/ and discover how their Ductile Iron double orifice air release valve can safeguard your system and ensure the smooth flow of your success.
